I built a york bracket in my high school shop class for a 4.0L. If you can't do it, you should probably take up knitting.
Either buy Kilby's kit (onboardair.com) if you're feeling lazy, or look at it, realize it's a small 1" spacer plate and another flat plate bracket with a 1" spacer welded to it that bolts up underneath your stock A/C compressor, and build it yourself. (With a cross bar support over the top of the A/C compressor if you wanna get fancy and be safe, mine never had one)
You will need Kilby's conversion pulley for your alternator to run the York if yours runs off of a v-belt.